import 'package:flutter/material.dart';

class PlaceholderPage extends StatelessWidget {
  const PlaceholderPage({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(''),
      ),
      body: Center(
          child: Column(
        children: <Widget>[
          const Placeholder(),
          Expanded(
            child: Row(
              children: const <Widget>[
                Flexible(
                  flex: 1,
                  child: Placeholder(
                    color: Colors.red,
                  ),
                ),
                Flexible(
                  flex: 4,
                  child: Placeholder(
                    color: Colors.green,
                  ),
                ),
              ],
            ),
          )
        ],
      )),
    );
  }
}
